I have mild sagging on my lower face, i've lost some facefat before especially on my mid face area, in this case is it better for me to treat that sagged lower jowls by hifu or dermal fillers. Do i need dermal fillers or just hifu is ok for sagging jowls or it can make my face worse according to the picture i shared. Also with the dermal fillers i am afraid for unnatural look. Thank you.